The depths of Amazon can be a bizarre place, full of products we either 1. Didn't know existed or 2. Didn't know we needed. (Or both.) And apparently, those weird-but-useful products can also be incredibly popular—selling at a rapid rate, only to never appear again once they're gone. To avoid missing out on these stranger things, we scoured Amazon's Movers & Shakers page for some of the fastest-moving items. Grab them before they disappear.

Oster Buffet Server

Cobalt Blue Glass Spray Bottles

Described as "reusable dark-colored potion bottles for travel and any purpose," these glass spray bottles will protect your liquids and come with a lifetime guarantee—making them, apparently, very popular. (Available here, $13.95)

Air Sofa Outdoor Inflatable Lounger

This lounger is designed to make camping—or any outdoor activity—infinitely more comfortable. It also inflates with the wind (or you can run with it open) making it simple to use. (Available here, $25.99)